Not sure if this has been posted before. Yet, it is super helpful for peeps who wish to migrate to Win 11 but can't because of their older systems.
This gentleman's ideas worked like a charm on a 10 year old i7 laptop.
Other than a 64 bit cpu, I had no secure boot nor any of the other Win 11 requirements. After editing the registry by adding the suggested two folders each with a DWORD set to 1 (as per the instructions), Win 11 installed and runs like a champ on an old loved laptop. Hope this worked for you.